From e991855d66cb299337b293d3e2d1b7f0a511ff69 Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Sun, 24 Jun 2012 18:01:27 -0700
Subject: [PATCH] Make 'do' expressions accept stack closures

---
 src/rustc/middle/block_use.rs | 2 +-
 src/test/run-pass/do-stack.rs | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 src/test/run-pass/do-stack.rs

diff --git a/src/rustc/middle/block_use.rs b/src/rustc/middle/block_use.rs
index ea1cb3f235e..9fcc3d286fc 100644
--- a/src/rustc/middle/block_use.rs
+++ b/src/rustc/middle/block_use.rs
@@ -34,7 +34,7 @@ fn visit_expr(ex: @expr, cx: ctx, v: visit::vt<ctx>) {
             i += 1u;
         }
       }
-      expr_loop_body(body) {
+      expr_loop_body(body) | expr_do_body(body) {
         cx.allow_block = true;
         v.visit_expr(body, cx, v);
       }
diff --git a/src/test/run-pass/do-stack.rs b/src/test/run-pass/do-stack.rs
new file mode 100644
index 00000000000..c7fec67542d
--- /dev/null
+++ b/src/test/run-pass/do-stack.rs
@@ -0,0 +1,5 @@
+fn f(f: fn&(int)) { f(10) }
+
+fn main() {
+    do f() { |i| assert i == 10 }
+}